曲线x^2/10-m+y^2/6-m=1(m,

问题描述:

曲线x^2/10-m+y^2/6-m=1(m,

A
解析:
椭圆x^2/10-m+y^2/6-m=1(m,双曲线x^2/5-n+y^2/9-n=1(5椭圆x^2/10+y^2/6=1同焦点.(a=10)
双曲线-x^2/5+y^2/9=1同焦点.(a=9)
满足10-9=16-5=1